282 



INDEX. 



Neill, Pat,, colonization of Helix 



pomatia by, 187. 

 Nelson, T. H., shells not seen upon 



birds' feet l)y, 50, 

 Nelson, W., on additions to the 



fauna of a pond, 14. 

 Nepa^ bivalves clinging to, 62. 



carrying powers of, 69. 

 Neritina, wide dispersal of, 40. 



experiments with, in salt water, 



41. 

 egg-capsules of, 41. 

 Nests, probable dispersal by birds 



when building, 164. 

 New Caledonia, snail carried to, by 



Loyalty Islanders, 203. 

 New Jersey, Helix nenioralis and 



H. appressa colonized in, 180, 



193- 

 New Zealand, colonization in, 



184. 

 Newcastle, Parmacella found near, 



208, 263. 

 Newcomb, H. L., on a Uiiio clinging 



to a teal, 80. 

 Newman, E., on shells in water- 

 pipes, 19. 

 Newton, Professor, on earth on the 



leg of a partridge, 158. 

 Newts, shells extruded by, 46. 

 bivalves clinging to, 70, 76. 

 wandering habits of, 75. 

 carrying bivalves over land, 77. 

 snails adhering to, 89. 

 Nicholls, Dr., on drift timber, 128, 



135- 

 on transportal of shells with 



plants, 196. 

 Norgate, F., on a leech clinging to 



a bird, 50. 

 on probable dispersal by herons, 



52. 

 on a rail caught by an oyster, 



60. 

 on bivalves clinging to water- 

 beetles and newts, 64, 72. 

 on the flying habits of water - 



beetles, 66. 

 on the wandering habits of 



newts, 75. 

 Norman, A. M., on Dreissena 



polymorpha in water-pipes, 

 18. 

 on Physa acuta, 225. 



Norman, G., on foreign snails 

 colonized in Yorkshire, 193. 

 on transportal with cattle-bone, 

 202. 



Northamptonshire, attempt to colo- 

 nize Helix pomatia in, 187. 



Norway, colonization in, 184, 1S7. 



Notouecta, bivalves clinging to, 62, 



63. 



carrying powers of, 69. 



Nottingham, foreign snails in an 

 orchid-house at, 199, 263. 



Nova Scotia, land-shells of coal- 

 measures of, 115. 



Nuts, shell in a bag of, 263. 



O. 



Oak-leaves, shower of, 148, 153. 

 Ocean currents. See Currents. 

 Oceanic islands, endemic land-shells 

 in, 90 et seq., 123. 

 almost all inhabited by land- 

 shells, 92. 

 on the stocking of, 92, 164, 



172, 176. 

 fresh-water shells sometimes 



absent from, 93. 

 arrival of species not witnessed, 



119. 

 richness of faunas of, increased 

 by time, 123. 

 Oceans, general permanence of, i, 

 117. 

 changes in, 2, 118. 

 Ill, C, on a bival 

 to a water-beetle, 64. 

 on the carrying powers of 

 water -beetles, 68. 

 Operculate snails, dispersal of, 85, 

 165. 

 absence of, from isolated waters , 



86. 

 tenacity of life of, 113. 

 distribution of, 136. 

 Operculum, molluscs clinging by 

 closure of, 85, 



